The color difference meter is also called a portable colorimeter, a color analyzer, and a color difference meter. The color difference meter is a simple color deviation test instrument, that is, to make a filter that simulates the spectral characteristics equivalent to the color sensitivity of the human eye, and use it to measure the light of the sample. The key is to design the spectral sensitivity characteristics of this photoreceptor , and can measure and display the color difference value by computer software under a certain light source. It is an instrument routinely used in scientific research and production
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